Dnsmasq up to 2.80 /src/helper.c create_helper information disclosure

Summaryinfo

A vulnerability, which was classified as problematic, was found in Dnsmasq up to 2.80. The affected element is the function create_helper of the file /src/helper.c. The manipulation results in information disclosure. This vulnerability is cataloged as CVE-2019-14834. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component. This entry has a duplicate CVE-2020-20145 assigned.

Detailsinfo

A vulnerability classified as problematic has been found in Dnsmasq up to 2.80 (Domain Name Software). Affected is the function create_helper of the file /src/helper.c. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on availability. CVE summarizes:

A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.

The weakness was shared 01/07/2020 (Website). The advisory is available at thekelleys.org.uk. This vulnerability is traded as CVE-2019-14834 since 08/10/2019. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 2.81 eliminates this vulnerability.

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Productinfo

Type

• Domain Name Software

Name

• Dnsmasq

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38
• 2.39
• 2.40
• 2.41
• 2.42
• 2.43
• 2.44
• 2.45
• 2.46
• 2.47
• 2.48
• 2.49
• 2.50
• 2.51
• 2.52
• 2.53
• 2.54
• 2.55
• 2.56
• 2.57
• 2.58
• 2.59
• 2.60
• 2.61
• 2.62
• 2.63
• 2.64
• 2.65
• 2.66
• 2.67
• 2.68
• 2.69
• 2.70
• 2.71
• 2.72
• 2.73
• 2.74
• 2.75
• 2.76
• 2.77
• 2.78
• 2.79
• 2.80

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

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